Prefabricated concrete beam support leveling device

Abstract

This utility model relates to the field of building bridge technology and discloses a prefabricated concrete beam support leveling device, including an embedded part and a leveling wedge steel plate. The side of the leveling wedge steel plate near the embedded part has an inclined surface, which supports the embedded part and is fixedly connected to it. This utility model, by using an embedded part in conjunction with a leveling wedge steel plate, breaks through the constraints of existing assembly processes. Leveling is performed after the beam is prefabricated, eliminating the need to consider longitudinal slope during beam prefabrication, thus greatly improving beam prefabrication efficiency. It also solves the problems of increased difficulty in opening grooves in the prefabricated beam platform, increased demolding difficulty, and impact on prestressing tension, significantly improving the reusability of the prefabricated beam platform and beam prefabrication efficiency. After beam completion, leveling is achieved using a wedge steel plate, which can be fabricated on-site according to actual needs, thus achieving precise and reliable leveling unaffected by disturbances during concrete pouring, improving reliability.

Description

Technical Field

[0001] This utility model relates to the field of building and bridge technology, specifically, it is a prefabricated concrete beam support leveling device. Background Technology

[0002] Concrete beam support leveling devices are mainly used for leveling the beams and supports in bridge or building structures. Their primary purpose is to ensure the correct position of the beam on the support and to effectively bear and transfer loads, ensuring structural stability. Existing leveling devices are mainly divided into four categories: convex beam bottom embedded steel plate leveling, convex beam bottom concrete wedge block leveling, concave beam bottom embedded steel plate leveling, and concave beam bottom concrete wedge block leveling. Among these, the convex leveling device has several drawbacks: it requires slotting on the precast beam platform, increasing demolding difficulty; the dimensions of the leveling steel plates (concrete wedge blocks) on the bottom of beams of the same span may vary between different projects, resulting in different slot sizes on the precast beam platform and reduced platform reuse rate; and during prestressing, the convex leveling device restricts the free shortening of the beam, affecting prestressing tensioning. For concave leveling devices: leveling devices with large longitudinal slopes or large dimensions at the bottom of beams may cause the thickness of the protective layer at the bottom of the beam to fail to meet the specifications, and may even interfere with the reinforcement at the bottom of the beam, thus making accurate and reliable leveling impossible. In addition, the above-mentioned leveling devices are all positioned and leveled before the beam concrete is poured, and disturbances during the beam concrete pouring process may lead to inaccurate and unreliable leveling. Utility Model Content

[0003] The purpose of this utility model is to provide a prefabricated concrete beam support leveling device to solve the problems of low beam manufacturing efficiency, high demolding difficulty, low reusability of prefabricated beam supports, and low leveling reliability caused by existing leveling devices.

[0004] This utility model is achieved through the following technical solution: a prefabricated concrete beam support leveling device, including an embedded part cast in the prefabricated concrete beam and flush with the bottom of the prefabricated concrete beam, and a leveling wedge steel plate arranged under the embedded part. The side of the leveling wedge steel plate close to the embedded part is provided with an inclined surface. The inclined surface of the leveling wedge steel plate is used to support the embedded part and is fixedly connected to the embedded part.

[0005] To better realize this utility model, the embedded part further includes anchoring steel bars and embedded steel plates. The anchoring steel bars are fixedly connected to the embedded steel plates. The anchoring steel bars are embedded in the prefabricated concrete beam. The embedded steel plates are flush with the bottom of the prefabricated concrete beam.

[0006] To better realize this utility model, the anchoring steel bar further has a vertical section perpendicular to the embedded steel plate and a parallel section parallel to the embedded steel plate.

[0007] To better realize this utility model, the outline of the pre-embedded steel plate is further larger than that of the leveling wedge steel plate.

[0008] To better realize this utility model, it further includes a plate rubber support, which is located between the leveling wedge steel plate and the cap beam.

[0009] To better realize this utility model, it further includes a support pad stone, which is located between the plate rubber support and the cap beam.

[0010] Compared with the prior art, this utility model has the following advantages and beneficial effects: (1) By setting up embedded parts and leveling wedge steel plates, this utility model breaks the constraints of the existing assembly process. After the beam is prefabricated, the leveling is carried out. The longitudinal slope problem can be completely ignored during the prefabrication of the beam, which will greatly improve the prefabrication efficiency of the beam. At the same time, it solves the problems of slotting the prefabricated beam platform, increasing the difficulty of demolding, and affecting the prestressing tension, which greatly improves the reuse rate of the prefabricated beam platform and the prefabrication efficiency of the beam. (2) After the beam is formed, the wedge-shaped steel plate is used for leveling. Since the wedge-shaped steel plate can be made on-site according to actual needs, accurate and reliable leveling can be achieved without being affected by the disturbance during the concrete pouring process of the beam, thus improving reliability. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of the present utility model. Figure 1 .

[0012] Figure 2 This is a schematic diagram of the overall structure of the present utility model. Figure 2 .

[0013] Figure 3 A schematic diagram of a wedge-shaped steel plate structure for leveling.

[0014] Wherein: 11-Anchoring steel bar; 12-Embedded steel plate; 13-Leveling wedge steel plate; 14-Plate rubber bearing; 15-Bearing pad stone; 21-Prefabricated concrete beam; 22-Cap beam. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example

[0017] This embodiment provides a prefabricated concrete beam support leveling device, specifically as follows: Figures 1-3 As shown, the structure includes an embedded part cast in the precast concrete beam 21 and flush with the bottom of the precast concrete beam 21, and a leveling wedge steel plate 13 arranged under the embedded part. The side of the leveling wedge steel plate 13 near the embedded part is provided with an inclined surface, and the inclination direction of the inclined surface is parallel to the arrangement direction of the bridge (i.e., along the bridge direction). The inclined surface of the leveling wedge steel plate 13 is used to support the embedded part and is fixedly connected to the embedded part.

[0018] During the pouring of the prefabricated concrete beam 21, the embedded parts are placed at the support position and flush with the bottom of the prefabricated concrete beam 21, exposing the connection surface of the embedded parts. There is no need to cut grooves on the prefabricated concrete beam 21 platform. Then, according to the longitudinal slope of different bridge spans, leveling wedge steel plates 13 with corresponding inclination angles are made. The leveling wedge steel plates 13 are then welded to the connection surface of the embedded parts. The welding is done using a symmetrical intermittent welding method to avoid large local deformation of the steel plate. In this way, the leveling operation of the prefabricated concrete beam 21 is completed using the specially made leveling wedge steel plates 13. Example

[0019] This embodiment further extends the above embodiment, specifically as follows: Figure 1 As shown, the embedded component includes an anchoring steel bar 11 and an embedded steel plate 12. The anchoring steel bar 11 is fixedly connected to the embedded steel plate 12. The anchoring steel bar 11 is embedded in the prefabricated concrete beam 21. The embedded steel plate 12 is flush with the bottom of the prefabricated concrete beam 21.

[0020] Multiple anchoring steel bars 11 are connected to the pre-embedded steel plate 12, and then the anchoring steel bars 11 are completely embedded in the prefabricated concrete beam 21, so that the pre-embedded steel plate 12 and the leveling wedge steel plate 13 have sufficient strength after connection, preventing the pre-embedded parts from loosening or separating from the prefabricated concrete beam 21.

[0021] Furthermore, the anchoring rebar 11 has a vertical section perpendicular to the embedded steel plate 12 and a parallel section parallel to the embedded steel plate 12. The length of the vertical section is used to control the depth of the anchoring rebar 11 embedded in the precast concrete beam 21, and the parallel section serves as an anchoring element to prevent the anchoring rebar 11 from loosening or detaching from the precast concrete beam 21. Alternatively, the anchoring rebar 11 can be designed with a wavy bend, as long as the arrangement direction of the anchoring rebar 11 is not parallel to the direction of force applied to the anchoring rebar 11.

[0022] Furthermore, the outline of the embedded steel plate 12 is larger than that of the leveling wedge steel plate 13. This ensures that disturbances during the pouring process of the prefabricated concrete beam 21 will not affect the leveling device.

[0023] The other parts of this embodiment are the same as those in the above embodiments, and will not be described again. Example

[0024] This embodiment further extends the above embodiment, specifically as follows: Figure 1 As shown, it also includes a plate rubber support 14, which is located between the leveling wedge steel plate 13 and the cap beam 22, and plays a role in shock absorption, buffering and support.

[0025] Furthermore, it also includes a support pad 15, which is located between the plate rubber support 14 and the cap beam 22, and plays a role in adjusting the height, reducing the thickness of the leveling wedge steel plate 13, and reducing cost input.

[0026] The other parts of this embodiment are the same as those in the above embodiments, and will not be described again.

[0027] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A prefabricated concrete beam support leveling device, characterized in that: The system includes an embedded part cast in the precast concrete beam (21) and flush with the bottom of the precast concrete beam (21) and a leveling wedge steel plate (13) arranged under the embedded part. The leveling wedge steel plate (13) has an inclined surface on the side close to the embedded part. The inclined surface of the leveling wedge steel plate (13) is used to support the embedded part and is fixedly connected to the embedded part.

2. The prefabricated concrete beam support leveling device according to claim 1, characterized in that: The embedded parts include anchoring steel bars (11) and embedded steel plates (12). The anchoring steel bars (11) are fixedly connected to the embedded steel plates (12). The anchoring steel bars (11) are embedded in the prefabricated concrete beam (21). The embedded steel plates (12) are flush with the bottom of the prefabricated concrete beam (21).

3. The prefabricated concrete beam support leveling device according to claim 2, characterized in that: The anchoring steel bar (11) has a vertical section perpendicular to the embedded steel plate (12) and a parallel section parallel to the embedded steel plate (12).

4. The prefabricated concrete beam support leveling device according to claim 2, characterized in that: The outline of the pre-embedded steel plate (12) is larger than that of the leveling wedge steel plate (13).

5. A prefabricated concrete beam support leveling device according to any one of claims 1-4, characterized in that: It also includes a plate rubber bearing (14), which is located between the leveling wedge steel plate (13) and the cap beam (22).

6. The prefabricated concrete beam support leveling device according to claim 5, characterized in that: It also includes a bearing pad (15), which is located between the plate rubber bearing (14) and the cap beam (22).

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